B3101
Keyless Entry Data Link Circuit
B3101 is an OBD-II diagnostic trouble code meaning: Keyless Entry Data Link Circuit. Common causes: open or short circuit in wiring harness, keyless entry module malfunction. Estimated repair cost: $56–167.
Symptoms
- Remote door opening/closing does not work
- Keyless entry system does not respond
- The malfunction indicator on the dashboard lights up
Causes
- Open or short circuit in wiring harness
- Keyless entry module malfunction
- Problems with the antenna system
- Software glitches
- Corrosion of contacts or connectors
How to Fix
- Check the integrity of the wiring harness
- Diagnose the keyless entry module
- Check the system antenna
- Update system software
- Clean or replace corroded contacts
Related codes
Error B3101 by Vehicle Brand
FAQ
What does the B3101 code mean?
B3101 is an OBD-II diagnostic trouble code that indicates: Keyless Entry Data Link Circuit
What causes a B3101 error code?
The most common causes of B3101 include: Open or short circuit in wiring harness; Keyless entry module malfunction; Problems with the antenna system; Software glitches.
How do I fix a B3101 diagnostic trouble code?
To fix B3101: Check the integrity of the wiring harness. Diagnose the keyless entry module. Check the system antenna. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with B3101?
Limited driving only, diagnose soon
How much does it cost to fix B3101?
The estimated repair cost for B3101 is $56–167. Actual cost depends on your vehicle, location, and labor rates.
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